Merge "msm: mdss: avoid overflow in mdp clock rate calculation for rotator" (b51f232f) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/video/msm/mdss/mdss_rotator.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1034,8 +1034,16 @@ static int mdss_rotator_calc_perf(struct mdss_rot_perf *perf)
		pr_err("invalid output format\n");
		return -EINVAL;
		}
		if (!config->input.width \|\|
		(0xffffffff/config->input.width < config->input.height))
		return -EINVAL;

		perf->clk_rate = config->input.width * config->input.height;

		if (!perf->clk_rate \|\|
		(0xffffffff/perf->clk_rate < config->frame_rate))
		return -EINVAL;

		perf->clk_rate *= config->frame_rate;
		/* rotator processes 4 pixels per clock */
		perf->clk_rate /= 4;